Coupling for 3″ RV sewer hose



FIG. 1 is an isometric view of a coupling for 3″ RV sewer hose according to the invention;

FIG. 2 is a front elevational view according to the invention, the rear elevational view being a mirror image;

FIG. 3 is a right elevational view according to the invention, the left elevational view being a mirror image;

FIG. 4 is a top plan view according to the invention, the bottom plan view being a mirror image; and,

FIG. 5 is a top, rear right perspective view according to the invention. 

The ornamental design for a coupling for 3″ RV sewer hose, as shown and described. 